gpu: Bind dummy GL API when no context is current

ui/gl/gl_context_wgl.cc

Index: ui/gl/gl_context_wgl.cc
diff --git a/ui/gl/gl_context_wgl.cc b/ui/gl/gl_context_wgl.cc
index 41f1b6349e027c24fedf7a190db21e0b2bda93db..220942339c837b56de3c89b833323a2c68448e2a 100644
--- a/ui/gl/gl_context_wgl.cc
+++ b/ui/gl/gl_context_wgl.cc
@@ -85,8 +85,9 @@ bool GLContextWGL::MakeCurrent(GLSurface* surface) {
   SetRealGLApi();
 
   SetCurrent(surface);
+  ScopedReleaseCurrent release_current(this, surface);
+
   if (!InitializeDynamicBindings()) {
-    ReleaseCurrent(surface);
     return false;
   }
 
@@ -95,6 +96,7 @@ bool GLContextWGL::MakeCurrent(GLSurface* surface) {
     return false;
   }
 
+  release_current.Release();
   return true;
 }